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Note 11 - Derivative Financial Instruments - Derivative Financial Instruments (Details) - USD ($) $ in Thousands		Jun. 30, 2017	Dec. 31, 2016
Interest rate swaps, notional amount		$ 345,747	$ 253,414
Interest rate swaps, net carrying value	[1]	1,024	2,964
Designated as Hedging Instrument [Member]
Interest rate swaps, notional amount		259,400	217,100
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Interest rate swaps, notional amount		50,000	0
Not Designated as Hedging Instrument [Member]
Interest rate swaps, notional amount		36,300	36,300
Interest Rate Swap [Member]
Interest rate swaps, notional amount		277,700	235,400
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Fair Value Hedging [Member]
Interest rate swaps, notional amount		174,210	182,177
Interest rate swaps, net carrying value	[1]	5,648	6,350
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Interest rate swaps, notional amount		50,000
Interest rate swaps, net carrying value	[1]	(214)
Interest Rate Swaps 1 [Member] | Designated as Hedging Instrument [Member] | Fair Value Hedging [Member]
Interest rate swaps, notional amount		85,216	34,916
Interest rate swaps, net carrying value	[1]	(1,421)	(658)
Interest Rate Swaps 2 [Member] | Not Designated as Hedging Instrument [Member]
Interest rate swaps, notional amount		36,321	36,321
Interest rate swaps, net carrying value	[1]	$ (2,989)	$ (2,728)
[1] Derivatives in a net positive position are recorded as "Other assets" and derivatives in a net negative position are recorded as "Other liabilities" in the Consolidated Statements of Financial Condition.

X

- Definition

Nominal or face amount used to calculate payments on the derivative asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5579245-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5580258-113959

+ Details

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X

- Definition

Fair value as of the balance sheet date of interest rate derivative assets, net of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized on the balance sheet.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13495-108611

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- Details

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- Details

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